spencer



(No Model.) 3 Sheets-Sheet 1.

J. SPENCER. PAPER CUTTING MACHINE.

No., 519,075. Patented May 1, 1894.

l Ik y Illllm Il Humll'ui l 7 /l Mii/5 hl f 4 8 i,

5 u] 9 LA k g v i fM/Z THE nunmal. LrmoGnAPmNe coMPAN wAsHmn'roN. D. c.

(No Model.) s sheets-sheet 2.

' -J. SPENCER.

PAPER CUTTING MAGHINE.

No, 519,075. Patented May 1, 1894,

Jsejo, 5j/@ence 77 ms NAnuNAL LmIoaRAFHING cmMPmw.v

wAeHmGToN. n. c.

(No Model.) 3 Sheets-Sheet 3.

J. SPENCER. PAPER CUTTING MACHINE. No. 519,075. Patented May 1, 1894.

Jois mw? TNB NATIONAL LrmoanAPNma coMFANY. wneumaron. o. c.

- adjustment for a dierent length of cut.

UNITED 'STATES PATENT OFFICE.

JOSEPHSPENCER, OF CORNWALL, CANADA.

PAPER-CUTTING MACHINE.

SPECIFICATION forming partv of Letters Patent No. 519,075, dated May 1,1894.

I Application filed May 25, 1893- Serial No. 475,460- (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH SPENCER, a citizen of the United States ofAmerica, residing at Cornwall, in the Province of Ontario and Dominionof Canada, have invented certain new and useful Improvements inPaper-Cutting Machines, of which the following is a specification,reference being had therein to the accompanying drawings.

My invention relates, in general, to papercutting machines for cuttingsheets of paper into varying lengths according to requirements; and moreparticularly refers to new and improved means for varying the length ofthe cut while the machine is in operation.

Heretofore, in this art, it has been the practice to adjust the lengthof the cut by various regulable motion-transmitting devices, such aschain-gearing, cone-pulleys, frictiondisks, &c., all of which are moreor less objectionable in that no direct connection is establishedbetween the cutting mechanism and the feed-roll, and moreover, there Visalways more or less possibility of accidental slipping which interfereswith the operation. Again, with some of these forms of connections, itis necessary to suspend operation to make lthe C- cordingly, myimprovement contemplates the provision of means so that by decreasing orincreasing the diameter of an expansible feedroll more or less paper canbe fed to the crosscut knife in the interim elapsin g between the lastcut and the next succeeding one, thereby cutting from an endless web ofpaper into the required sheets of various lengths without interferingwith the continuous operation of the machine. Owing to the fact that thefeedroll itself is variable in diameter under the control of theoperator to feed the :necessary length of out, the cross-cut knife andthe said feed-roll can be directly connectedby inflexible and invariablegearing, thus precluding any possibility of slip between the two. By myinvention, the difficulty which has been experienced in cutting paper towater-mark is entirely obviated. In utilizing machines for this latterpurpose having changeable or variable gearing, such as are present onlathes, it is almost impossible to obtain the exact length of cutrequired.- The usual result is that the sheet is-a little long or alittle short.

. the roll.

In like manner, Where the knife and feed are connected by chain orsprocket gearing, it is very difficult to adjust the latter while themachine is in motion; and in cutting to water-mark this type of machineis impracticable.

My invention has for its further object to provide a machine of thisclass which will be simple in construction, inexpensive in manufacture,durable in use, and eminently serv- -iceable and'eflicient in operation.

For the attainment of these objects, and for other purposes hereinafterenumerated, this improvement comprises, in brief, certain details ofconstruction, and organization of apparatus, all of which will be morefully described hereinafter.

The novel features of the invention are embraced in the appended claimswhich are intended to accord in their scope and meaning with the priorstate of the art and the existing law.

Referring to the accompanying drawings forming a part of thisspecificatiom--Figure l is a side view of a machine embodying myinvention.4 Fig. 2 is a central longitudinal section of Fig. 1. Fig. 3is a transverse section of Fig. 2, taken centrally through thefeed-roll. Fig. 4 is a top-plan viewY of Figs. land 2. Fig. 5 is adetail perspective view of the expansibleA feed-roll, shown detachedfrom the machineand from its supporting shaft. Fig.l 6l is a transversecentral section,

enlarged, of the expansiblefeed-'rolhl showing 7 is a similar view,showing the same expanded to the utmost. Fig. 8 is a detail perspectiveView of one of the series ofstaves which compose the periphery orsurface'of Fig. 9 is a detail enlarged view, with parts broken away,showing the regulating or adjusting mechanism whereby the feedroll isexpanded or contracted by the operator.

In all of the views of the drawings, like numerals of referencedenote'like or corresponding parts.

Referring to Figs. 1 and 2, 1, is the framework of the machine, of anyapproved or desired construction to hold vand accommodate the incumbentand operating parts.

2, are the supply-rolls mounted in suitable bearings on an extension, 3,of the frame.

the, same in its most contracted position. Fig.

4f, are tension rolls, journaled in adjustable spring-pressed bearings,5, and serving to guide and take up slack in the paper fed from thesupply-rolls.-

6, is the feed-roll.

7 is the tension-roll coacting with the feedroll and located above thesame in journals carried by the bracket-arm, 8, of the frame; and 9 isthe cutting-roll carrying the cutting knives, 10, co-operating with thestationary bed-knife removably seated in a bed-plate, 11, fitted to theforward bracket-frame, 12. Motion is given the cutting roll in anydesired manner from any suitable power source, not shown, and thecutting-roll is directly connected with the feed-roll bya king-gear, 13, on the cutting-roll intermeshing with the similar gear, 14, on thefeed-roll. The feed-roll, 6, is made up of a series of radially movableintegral staves, 15, forming the periphery or surface thereof, and eachprovided centrally with an angular knee or bend, 16, whereby theinterval or space between any two staves will not be in an axial planeof the roll, and will thereby prevent the paper from being creased orforced into the crevices between the staves. At each end of a stave isformed a depending triangular projection, 17, extending downward fromthe under side thereof and having an inclined straight face, 18,provided with an integral dovetailed inclined tongue or rib, 19 formedby two undercut recesses, 20, one on each side of the rib or tongue. Bymeans of this dovetailed tongue or rib of each extremity of a stave asplined or dovetailed movable connection is made with thecylinder-heads, as hereinafter explained. The staves are supported ateach v end by the cylinder heads, 21, one at each end of the feed-roll.Each head, 21 is in the form of a solid metal drum having an inwardlybeveled or chamfered tread or periphery provided at intervalsthere-around with undercut recesses, spaced equal distances apart, andcoincident severally with the tongues or ribs, 19, one of each of whichis designed to be seated and held slidably in an opposite recess, 22.Thus, by this construction, it will be clear that by moving the heads,21, in unison in either direction, the staves will be radially expandedor contracted accordingly, owing to the dovetailed connection and thecorresponding inclinations of the tongues and the treads of thecylinder-heads. These two cylinder-heads are rigidly connected togetherfor joint movement by the longitudinal tie-rods, 23, screwed at each endinto the body of an adjacent head; and the said heads are severallysplined on the central shaft, 24, which is journaled at each extremityin suitable bearings, 25, of the frame. Midway the shaft, 211, isrigidly keyed the cross-head 26 having around its outer tread orperiphery a series of radially-extending guide-holes, 27, in which workthe limiting pins, 28, severally secured at their outer ends to thecenters of the staves. Between the cross-head and each stave isinterposed an expansion-spring, 29, coiled around the limiting pin ofthat particular stave and tending to keep the staves away from thecrosshead. By means of this latter construction, the staves areprevented from any lengthwise movement when they are outwardly orradially expanded.

On the operating side of the machine, one of the heads, 21, is providedwith a laterally projecting integral boss, 30, having an annular recess,31encircling the same exteriorly, and forming a seat for the collar, 32,which is or may be loosely fitted therein. On the journal bearingadjacent to this particular head is formed an outwardly projectingintegral screw-stem, 33, upon which Works the regulating hand-wheel, 34,the hub of which is interiorly screw-threaded to engage the stem, 33,and is further provided with an extension-boss 35 provided with an outerannular recess, 36, in which is seated the annular collar, 37, connectedby the tie-rods, 38, with the collar, 32, on the head 2l. By thisarrangement the operator can slide the heads, 21, back and forth on thespline of the shaft to contract or expand the staves, at will.

On the end of the stem, 33, is screwed the jam or clamp-nut, 39, whichcan be used by the operator to lock the hand-wheel, and consequently theheads, 21, in any desired position.

In operation, the operator can, by expanding the staves, or contractingthem, increase or decrease the diameter of the feed-cylinder, andthereby vary the length of the cut of the sheet.

In regard to the arrangement and operation of the supply-rolls, thetension rolls, the cutting-rolls, and the cutting knives, together withother concomitant apparatus, no special description is necessary sincethey form no component part of the invention, and may be of any approvedconstruction or arrangement.

Various changes as to form, proportion, material, and details ofconstruction of the subject-matter of my invention may be had withoutthe exercise of invention, and therefore, without departure from thespirit of the invention.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. In a paper cutting machine, the combination with paper cuttingmechanism, of an expausible feed roll forming a part of the feedingmechanism and comprising a series of radially movable staves, eachprovided with a knee or bend, and means, substantially as described, formoving and controlling said staves.

2. In a paper cutting machine, the expansible feed roll composed ofaseries of closely arranged radially movable staves having lateral bendsbetween their ends defiect-ed in the same direction so that the bends ofthe IOO IIO

staves fit into each other or interlock for the bolt rigid with theframe, and a :nut thereon purpose set forth, and sliding heads forconhaving a loose ring confined thereon and controlling said staves.nected with said first mentioned ringv for the 8. In a paper cuttingmachine, the combipurpose described. I5 5 nation of cutting mechanism,the expansible In testimonyiwhereof Iaix my signature in feed rollclmposed of radially movable staves, presence of tWo witnesses. 'anaxial s aft journaled in the frameof the machine, guides for the staves,the connected JOSEPH SPENCER' sliding heads on the shaft controlling andWitnesses: ro moving the staves, the outer head having a N. H. MOINTOSH,

grooved hub, a loose ring in the hub, a screw S. I. GOGO.

